Burr12 Distribution

There are two shape parameters $c,d>0$ and the support is $x\in [0,\infty )$. The Burr12 distribution is also known as the Singh-Maddala distribution.

where $B(a,b)=\frac{\Gamma (a)\Gamma (b)}{\Gamma (a+b)}$ is the Beta function.

Implementation: scipy.stats.burr12